Residential Acoustics Soundproof, Thermal, Blackout Curtains (Black and Tan, Large: 48" W x 60" L) 100% Duck Cotton Canvas Made in USA Sound blocking. Our patented AcousticCurtains reduce incoming noise by 70 - 90%. The only sound blocking curtain with an STC rating of 29. Easy to Install. Our AcousticCurtains are easy to install and leave minimal traces when removed. Perfect for the use in any living space: the bedroom, nursery, home office, campus housing and more. Thermal Insulating. The AcousticCurtain blocks significant heat transfer in both directions to reduce your heating and cooling costs. Warm in the winter and cool in the summer. Made in the USA. Our products are all handmade using only the highest quality fabrics and materials. Blackout. The AcousticCurtain blocks over 99% of light from entering your living space to create the optimal sleep environment.